Question

The maximum value of magnitude of (A vector-B vector) is

Answer 1

Answer: A + B

Explanation:

Cos 180 = -1

Answer 2

Answer:

r = root of (A^2+ B^2 -2ABcos180)

= root of {A^2 + B^2 -2AB (-1)}

= root of ( A^2+ B^2 +2AB)

= root of {(A+B)^2}

= (A+B)

the answer is (A+B)